Polishing-wheel.



J. JOSEPH.

POLISHING WHEEL.

APPLIOATION rum) SEPT. 25, 1913.

1 ,O8.(),561 Patented Dec. 9, 1913.

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FFIQE.

JOSEPH JOSEPH, OF CLEVELAND, OHIO.

POLISHING-WHEEL.

Specification of Letters Patent.

Patented Dec. 9, 1913.

To all whom it may concern:

Be it known that I, Josnrn Josnrn, citizen of the United States, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented certain ne\ i and useful Improvements in Polishing-\Vheels, of which the following is a specification.

This invention relates to polishing wheels or blocks suitable for polishing stones or the like having plane surfaces.

The object of the invention is to provide improved means for fastening the polishing stone to a holder or plate which is rotated in the operation of the machine.

The invention is illustrated in the accompanying drawing in which Figure 1 is a side elevation of the wheel. Fig. 2 is a detail showing one of the claws for holding the stone. Fig. 3 is a bottom view of the wheel. Fig. 4 is a detail in section showing a projection on the top plate for engaging the stone.

Referring specifically to the drawings, (3 indicates a top plate which has on its under side projections or flanges 6 so located as to engage in the openings or recesses 7 of the stone 8, said openings or recesses being commonly formed in polishing stones. The engagement of the projections 6* in said openings prevents relative rotation of the plate and the stone and assists in holding the latter in place.

A plurality of removable spring plates or claws 9 are used to hold the stone to the plate. These claws are attached to lugs 12 on the top of the plate by means of bolts 11 the claws being slotted as indicated at 10 to permit adjustment thereof. The bills of the claws are turned in as indicated at 9 to engage the stone and the claws are prefcrably made of spring metal so that when the screws ll are joined they will bite into the side oi. the stone 8 with suflicicnt force to hold the stone in position. liy loosening the bolts the stone may be readily attached or detached.

As stated, the flanges G engaging in the holes in the stone prevent relative rotation as the plate is revolved, and the claws hold the stone in position against the underside of the plate.

\Vhat I claim as now is:

1. A polishing wheel comprising a stone having openings therein, a plate having projections extending into said openings and engaging the stone, claws attached to the plate and depending beside the stone, and means to press said claws into biting engagcmcnt with the sides of the stone, to hold the stone to the plate.

2. A polishing wheel comprising a stone having openings in the same, a top plate having projections on its upper and lower sides, the latter extending into the openings and engaging the stone, (laws depending below the plate and engaging the periphery oil the stone, and Fastening devices between said claws and the projections on the upper side of the plate.

In testimony whereof, I. do all'ix my signature in presence of two witnesses.

JOSEPH JOSEPH.

Vitncsscs J OIIN A. BOMMIIARDT, D. C. linen.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

